Pneumatic nailing machine



FIG. 1 is a front and left side perspective view of a pneumatic nailing machine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a left side view thereof.

The broken line portions show environmental structure for illustrative purposes and form no part of the claimed design. 

The ornamental design for a pneumatic nailing machine, as shown and described. 